Assuming you may mean Shiny or customized Pokemon, Pokemon cannot be changed to shiny willingly without using the Action Replay. Shiny Pokemon can be encountered randomly in the wild with a low rate of 1/8192, which will alter the color of the normal Pokemon. Customized Pokemon (Shadow Lugia, etc.) may also just be a hack or mod within Pokemon Diamond, Pearl, and Platinum.
You can use your Neopets account for PetPet park.
TNT, or The Neopets Team, made Petpet Park.
You can get a Petpet Park account and play free. There's a lot of things that don't require real money, you can play mini games, do quests and dress up your petpet. Right now there are haircuts, new colors, more types of petpet and a few lands you can pay for, but that's it.
in the petpet station
in wailiting tunnels in pet pet park
The Petpet Plaza is found by easily looking in your map on Petpet park.
You can use your Neopets account for PetPet park.
Petpet Park was created in 2008-10.
You don't.
At the Petpet Emporium.
you guessed it, it's in PetPet Park :) hammered you
TNT, or The Neopets Team, made Petpet Park.
Market Lane
you don't get it on petpet park. you have to actually buy it with real money.
You do have homes but I dont know how to get one, but I do have an account at Petpet Park.
To get parkpoints on Petpet Park, do a job for someone or play games.
You can get the golden egg on petpet park at the pet shop